« previous next »

Author Question: A boy throws a rock with an initial velocity of at 30.0 above the horizontal. How long does it take ... (Read 61 times)

kellyjaisingh

  • Hero Member
  • *****
  • Posts: 540
on: Jul 29, 2018
A boy throws a rock with an initial velocity of at 30.0 above the horizontal. How long does it take for the rock to reach the maximum height of its trajectory if air resistance is negligibly small and g = 9.80 m/s2?
 
  A) 0.160 s
  B) 0.282 s
  C) 0.313 s
  D) 0.441 s

Question 2

The acceleration due to gravity on the Moon is only one-sixth of that on Earth, and the Moon has no atmosphere.
 
  If you hit a baseball on the Moon with the same effort (and therefore at the speed and angle) as on Earth, how far would the ball would travel on the Moon compared to on Earth? Neglect air resistance on Earth. A) 1/6 as far as on Earth
  B) 36 times as far as on Earth
  C) the same distance as on Earth
  D) 6 times as far as on Earth
  E) as far as on Earth


xoxo123

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Bururi long-fingered frog (Cardioglossa cyaneospila) Bururi long-fingered frog (Cardioglossa cyaneospila)
This girl has a long leg cast, which was applied after surgery to correct her clubfoot. This girl has a long leg cast, which was applied after surgery to correct her clubfoot.
Volcanoes Are Rock Factories Volcanoes Are Rock Factories
Success, You Rock, Achievement, The way we work Success, You Rock, Achievement, The way we work
Endochondral ossification of long bone. Endochondral ossification of long bone.
Vertical and Horizontal Changes in Pressure Vertical and Horizontal Changes in Pressure
Video: Types of Transport - Uniport, Antiport and Symport (Glucose and Na+K+ Transporters)

For a complete list of videos, visit our video library